Temporary Fix for Shortcode Not working Issue in WordPress 4.2.3 update In the home directory, edit the wp-config.php and add the following line ( This stops from auto update ) : define( ‘WP_AUTO_UPDATE_CORE’, false ); Go to wp-includes folder and replace the following files from the version WordPress 4.2.2 https://core.svn.wordpress.org/tags/4.2.2/wp-includes/: kses.php Shortcodes.php Done!!! Hopefully it should work